Determining a Decentered lens

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Kenny08 Regular Member • Posts: 246
Determining a Decentered lens
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I'm still testing the 10-20mm Nikon lens that I picked up recently and trying to determine if it's actually decentered.

I have a question with regards. If the bottom left corner appears softer than the right corner, should the entire left side of the image be soft and not just the corner if the lens does have an issue?

Have a look at the picture at 10mm- the left bottom of the grass appears softer, but does the rest of the left side of the image appear fine? Ie. Fence and building appear sharp.

Here's another at 10mm.

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